[PATCH] stack: improve source code readability

[Morten Brørup]

Fixed misleading local variable names in the standard stack,
for improved source code readability.
No functional change.

Fixes: 05d3b5283cc1 ("stack: introduce stack library")

Signed-off-by: Morten Brørup <m...@smartsharesystems.com>
---
No need to backport.
---
 lib/stack/rte_stack_std.h | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/lib/stack/rte_stack_std.h b/lib/stack/rte_stack_std.h
index ae28add5c4..d5b21defb0 100644
--- a/lib/stack/rte_stack_std.h
+++ b/lib/stack/rte_stack_std.h
@@ -25,20 +25,20 @@ __rte_stack_std_push(struct rte_stack *s, void * const 
*obj_table,
 {
        struct rte_stack_std *stack = &s->stack_std;
        unsigned int index;
-       void **cache_objs;
+       void **stack_objs;
 
        rte_spinlock_lock(&stack->lock);
-       cache_objs = &stack->objs[stack->len];
+       stack_objs = &stack->objs[stack->len];
 
-       /* Is there sufficient space in the stack? */
-       if ((stack->len + n) > s->capacity) {
+       if (unlikely((stack->len + n) > s->capacity)) {
+               /* Insufficient space in the stack. */
                rte_spinlock_unlock(&stack->lock);
                return 0;
        }
 
-       /* Add elements back into the cache */
+       /* Push objects to the stack */
        for (index = 0; index < n; ++index, obj_table++)
-               cache_objs[index] = *obj_table;
+               stack_objs[index] = *obj_table;
 
        stack->len += n;
 
@@ -63,20 +63,22 @@ __rte_stack_std_pop(struct rte_stack *s, void **obj_table, 
unsigned int n)
 {
        struct rte_stack_std *stack = &s->stack_std;
        unsigned int index, len;
-       void **cache_objs;
+       void **stack_objs;
 
        rte_spinlock_lock(&stack->lock);
 
        if (unlikely(n > stack->len)) {
+               /* Insufficient objects in the stack. */
                rte_spinlock_unlock(&stack->lock);
                return 0;
        }
 
-       cache_objs = stack->objs;
+       stack_objs = stack->objs;
 
+       /* Pop objects from the stack */
        for (index = 0, len = stack->len - 1; index < n;
                        ++index, len--, obj_table++)
-               *obj_table = cache_objs[len];
+               *obj_table = stack_objs[len];
 
        stack->len -= n;
        rte_spinlock_unlock(&stack->lock);
-- 
2.43.0